Brush-block-boring machine



E. W. HOWE. BRUSH BLOCK ,BORING MACHINE. APPLICATION FILED MAY 10. 192;.

' Patented June 20, 1922.

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2 sums llllllll Il E. W. HOWE.

BRUSH BLOCK BQRING MACHINE. APPLICATION `FILED MAY 1o. 1921.

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intensif To all robo/m, t may concern Be it known that l, lnwann lV. Howe, a citizen oli the United {5ta-tes, and resident of Toledo, in the county of Lucas and State olf Ohio, have invented certain new and useful Improvements inv Brush-Bloclr-Boring Machines, of which the following is a specilication.

My invention relates to brush block boring machines and it is my purpose to` generally improve the construction oi? such machines whereby compact assembly oit parts, ease of operation, and consequently greater speed in ru'oducftion is obtained, my .invention consisting in the novel 'features ot construction, combination and arrangement el? parts as will be hereinafter more iinlly disclosed and el aimed..

llly .inventive idea is capable ol embodiment in various mechanical structures, one of which is shown in the accompanying drawings, but it is to be understood that the structure illustrated :is merely intended to disclose the essential .features o'l my invention in a preferred term and that its scope is as defined in' the appended claims.

ln the drawings, wherein like characters oil.: reference .denote Correspending parts in the different views Figure 1 is a side elevation of a brush block boring machine constructed in accordance with my invention, with certain parts removed.

Figure 2, an end view ot the same.

Figure 3, a plan view,

Figure 4l, an endview opposite to Figure 2,

Figure 5 a fragmentary side elevation showing the parts omitted 'from Figure l.; and

Figure G an enlarged detail section oit one ot the drill spindle supports.

Referring now to the drawings in detail,

it will be observed that the movable parts of my machine are mounted upon a trame or support l0 which includes a base portion 11 having a standard l2 rising from one end thereof. portion is a longitudinally extending,1 guide flange 13 having formed therein a L'lslot 14, while between the base and the standard l2 is a housing; l5 adapted to receive an electric motor 1G or other suitable power appawhich it projects.

'the standard '12.

Upon the upper tace of the base' Specification of letters Patent. Pgrfgqjjnlid Jun@ 2q), 199220 Application. filed l'flay l0, 1923..

Serial No. 468,407.

ratuslior operatingthe driven parts of the machine.

Secured to one side of the standard l2 is Va plate 17 which is .bored at 18 to receive a pin' 19. Between a pair of shoulders on the pin and inthe bore, respectively, is a coiled expansion spring 2O exerting an influence urging a tapered end 2l of the pin normally beyond the end of the plate through A nut on theopposite end .of the pin provides an adjustable means oi? limiting movementof vthe pin with respect to the plate,rwhile the plate itself is adjustable with res iect to the standard l2 by reason oli a slet 2Q Vthrough which the bolts 23 which secure .it to the standard are passed.

Carried by and extending1 through the standard l2 and. horizontally alined with the pin 1.9 is a pair of spindles A2li, each of which carries, to one side or the standard, a drill chuck 25, and to the `other side ot the standard a pulley 26. A belt 27 passes over a pulley 28 on the motor spindle and over the pulleys 2G whereby the drill chucks may be rotated, and an idler pulley 29 is carried by a .bracket 30 adjustably secured to the standard whereby the tension of the belt may be regulated. Y

Each of the spindles 2e is mounted for longitudin l yielding` movement as indicated in Figure et the drawings, being journaled in. suitable bearings '31 within abushing 32 which inv turn. is slidably supported within bushing and adapted to abut the standard limits movement ol. the bushing` in adirection. inv which it is normally urged by a oiled spring` ."-l, but said bushing may be moved in an opposite direction against the spring as is obvious. Secured to each bushing is a bracket which serves as both a drill Ouide and depth. gauge.

A. plate carried by then l block 85 has its under face channeledA to receive the guide Vflange 13 and a pair ofV bolts 37 passing' through this block and havingr their, heads received inv the T -slot 14 provides means for retaining lthe block in proper relation to the guide flange, at the4 same time permitting the block to be moved or adjusted along` said flange.

A sha'lit 38 passing` through the block 36 provides a means et securing an anti-friction bearing 39 to either side of the latter with an offset or extension 41 within which is journaled in suitable anti-friction bearings 42 a shaft 43. A collar 44 on the shaft abuts one side of the extension 41 and a nut 45 is threaded on the shaft andabuts the other side of the extension whereby the freedom of rotation of the shaft may be varied. Adjacent to the collar 44 the shaft is provided with a bifurcated head 46 between the arms of which is clamped a shaft 47 which extends longitudinally of the machine and at its end adjacent the standard 12 carries a frame 48 rotatably supporting three vertically disposed shafts 49, 50 and 51, the first of which is normally disposed in alignment with the pin 19 while the latter two are respectively normally disposed in alignment with the pair of drill chucks 25. A hole is formed transversely through both the upper and lower end of each shaft 49, 5() and 5l and each hole slidably receives a rod 52, held in any slidably adjusted position by a set screw 53. A block 54 is carried by each shaft 52 adjacent the end of the latter disposed towards the arm 40 and connecting these blocks are link members 55. Carried by each upper and lower pair `of rods 52, upon their ends disposed towards the standard 12, isa plateV 56 having means 57 associated therewith for holding either a brush block 59 or a pattern plate 60. As shown, the pattern plate is held by the plate 56 supported from the vertical shaft 49, while a pair of brush blocks 59 are heldl by the plates 56 supported from the vertical shafts 50 and 5l.

The pattern plate 60* has holes therein llocated and spaced in a manner in which it is desired toV form brush wisp-receiving holes in the brush blocks 59, and since the manner of mounting the plates 56 renders them movable in unison, successive alinement of the holes in the pattern plate with the tapered end of pin 19 and movement of theV brush blocks toward the drills carried by the chucks 25 will result in holes being drilled in the brush block corresponding to the arrangement of the holes in the pattern wards the pattern plate the proper aline# ment ofthe tapered end thereof with the holes in the pattern plate may be obtained.

before the brush blocks are brought into contact with the drills, thus reducing the possibility and chance of drilling erroneously located holes in the brush blocks, and if too great a pressure of the brush blocks against the drillsbe exerted the springs 20 and 34'will permit the pin 19 and chucks 25, respectively, to yield, the members 35 in any event limiting the depth of the holes drilled in the brush blocks.

By means of the blocks 3G the pattern plate and brush blocks together with their supporting structure are movable bodily toward and away from the drills and the guide pin 19, and by means of the pivoted connections between the block 3G and arms 40, and between the shaft 43 and arm 40 and shaft 47, respectively, and between shafts 49, 50 and 51 and the frame 48, practically any desired adjustment of the brush blocks and pattern plate with respect to thedrills and guide pin may be had. Furthermore, it is clear that the number of brush blocks possible to be drilled from a single pattern plate is indefinite, and at the same time the machine is of simple and comparatively inexpensive con* struction as well as strong and durable and its parts are compactly arranged.

ln lthe drawings l have illustrated the pattern plate 60 as secured to its plate 56 in the same manner that the brush blocks are Secured to their respective plates, but as the pattern plate is seldom removed it may be secured in various manners, as for instance, by screwing it fast to plate 56, or by fastening it to a block and then in any desired manner securing the block to the plate, or the same Y result may be accomplished in any other manner, the specific means for so doing constituting no essential part of my in'- vention.

Having thus described my invention, what l claim is 1 A brush block boring machine compris ing a base having a drill mounted thereon, and brush block holding means mounted on the base and including` an arm pivoted for Y swinging movement in a plane parallel with respectjto the axis of the drill, a shaft carried by said arm and disposed parallel to the pivotal axis thereof, said shaft being rotatably adjustable with respect to the arm, a rotatably adjustable shaft carried by and disposed at right angles to said first mentioned shaft, a frame carried by said second mentioned shaft, and meanscarried by said last shaft upon which the brush block is secured.

2. A brush block boring machine comprising a base having a drill mounted thereon, and brush blocl; holding means mounted Von the base and including an arm pivoted for swinging movement in a plane parallel with respect to the axis of the drill, a rotatably adjustable shaft carried by the arm anddisposed parallel` to the pivotal axis thereof, a

shaft carried by and disposed at right angles to said rst mentioned shaft, said second mentioned shaft being rotatably and longitudinally adjustable with respect to the first shaft, a frame Carried by said second mentioned shaft, and means carried by the frame upon which the brush block is mounted.

In testimony whereof` I hereunto affix my signature in the presence of two Witnesses.

.EDWARD 1W. HUWE.

Witnesses:

EMMA R. KEMM, HELENE I. BOUGHTON. 

